320 / | HD | ELECTRICITY: BATTERY OR CAPACITOR CHARGING OR DISCHARGING |
FOR 101 | DF | BATTERY CHARGING AND/OR DISCHARGING (320/2) {15} |
FOR 160 | DF | .~ Generation systems for battery charging (320/61) {4} |
FOR 163 | DF | .~.~ Generator field-winding circuit control (320/64) {3} |
FOR 164 | DF | .~.~.~ Plural, diversely treated field windings (320/65) {1} |
FOR 165 | .~.~.~.~ Differentially related (320/66) |